66705308 has 12 divisors (see below), whose sum is σ = 117109440. Its totient is φ = 33245472.

The previous prime is 66705277. The next prime is 66705347. The reversal of 66705308 is 80350766.

It is a happy number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25388 + ... + 27891.

It is an arithmetic number, because the mean of its divisors is an integer number (9759120).

Almost surely, 2^66705308 is an apocalyptic number.

It is an amenable number.

66705308 is a deficient number, since it is larger than the sum of its proper divisors (50404132).

66705308 is a wasteful number, since it uses less digits than its factorization.

66705308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53596 (or 53594 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66705308 is about 8167.3317552307. The cubic root of 66705308 is about 405.5584593719.

The spelling of 66705308 in words is "sixty-six million, seven hundred five thousand, three hundred eight".